What is lichen planus?
Lichen planus is an inflammatory disorder in which immune activity targets cells within the skin or mucous membranes.
It may affect:
- Skin
- Inside the mouth
- Lips
- Scalp and hair follicles
- Fingernails and toenails
- Vulva and vagina
- Penis
- Other genital skin
Some patients develop disease at only one site, while others have involvement of several areas.
What causes lichen planus?
The exact cause is not completely understood.
Lichen planus is believed to develop when the immune system mistakenly attacks cells in the skin or mucous membranes. Why this begins in one person and not another is often unclear.
Possible contributing factors may include:
- Genetic susceptibility
- Immune dysregulation
- Skin injury
- Certain medicines
- Contact allergy in selected oral lesions
- Associated infection or another medical condition in particular patients
A trigger is not identified in many cases.
What is oral lichen planus?
Oral lichen planus affects the inside of the mouth.
It may involve:
- Inner cheeks
- Gums
- Tongue
- Roof of the mouth
- Lips
Some patients develop only painless white lacy lines. Others develop redness, burning, raw areas or painful ulcers that interfere with eating and oral hygiene.
Types, options and detailed guidance
Is lichen planus contagious?
No. Lichen planus is not contagious.
It cannot spread through:
- Touching
- Sharing towels
- Food
- Kissing
- Sexual contact
- Swimming
- Living in the same household
Lichen planus is an inflammatory condition rather than a bacterial, fungal or viral infection that passes from one person to another.
Is genital lichen planus a sexually transmitted infection?
No. Genital lichen planus is not an STI.
However, genital disease can cause soreness, burning, erosions and pain during sexual activity. It may resemble infection, allergy, lichen sclerosus or another genital condition, so diagnosis should be confirmed before treatment.
Can medicines cause a lichen-planus-like rash?
Yes. Some medicines can produce a lichenoid drug eruption, which resembles lichen planus.
The rash may begin weeks or months after a medicine was started. A careful review of prescription medicines, non-prescription drugs and supplements is therefore part of assessment.
Patients should not stop an important prescribed medicine independently. The suspected relationship should be discussed with the dermatologist and the original prescribing doctor.
What does lichen planus look like on the skin?
Classic skin lichen planus may produce:
- Small, raised bumps
- Flat-topped lesions
- Purple, violet, brown or grey colour
- Fine white lines on the surface
- Intense itching
- Groups of closely packed bumps
- Thickened plaques
- Ring-shaped lesions
- Dark marks after healing
The wrists, ankles, lower back and legs are commonly affected, although lesions can appear elsewhere.
How does lichen planus appear on Indian skin?
On medium-to-deep Indian skin tones, lichen planus may appear:
- Dark brown
- Purple-brown
- Violet
- Grey
- Nearly black
- Less visibly red than expected
After the active bumps settle, dark post-inflammatory marks may remain for months or occasionally longer. These marks are more frequent and can be more noticeable in darker skin tones.
What are Wickham striae?
Wickham striae are fine white or grey lines seen across the surface of some lichen planus bumps or oral lesions.
They may create a:
- Lacy pattern
- Net-like pattern
- Branching pattern
- Fine white surface marking
Their presence can support the diagnosis, but they may be subtle or absent.
Can lichen planus develop after scratching or injury?
Yes. New lesions can sometimes develop along an area of skin injury, known as the Koebner phenomenon.
Possible triggers include:
- Scratching
- Cuts
- Friction
- Burns
- Surgical scars
- Tattoos
- Repeated rubbing
Reducing scratching and protecting inflamed skin can help limit further injury.
Does skin lichen planus clear naturally?
Skin lichen planus may improve without treatment, particularly when disease is mild and limited.
Many cutaneous cases clear over approximately one to two years, although the timeframe varies. Dark marks may remain after the raised lesions have resolved. Oral, genital, scalp and nail lichen planus can last longer and may need active treatment or monitoring.
What are the types of oral lichen planus?
Reticular oral lichen planus
This form causes white lacy lines or small white patches and may produce little or no discomfort.
Erosive oral lichen planus
This form causes raw, red, ulcerated or painful areas.
Atrophic oral lichen planus
The lining appears thin, inflamed and sensitive.
Plaque-like oral lichen planus
Thicker white patches may develop and need differentiation from other oral conditions.
Different patterns can occur together.
What symptoms can oral lichen planus cause?
Possible symptoms include:
- Burning
- Stinging
- Mouth soreness
- Pain while eating
- Sensitivity to spicy food
- Sensitivity to acidic food
- Bleeding gums
- Pain during brushing
- Painful ulcers
- Altered taste
- Dry or uncomfortable mouth
Symptoms may fluctuate, with periods of improvement followed by flare-ups.
Does oral lichen planus increase the risk of oral cancer?
Oral lichen planus carries a small but clinically important potential for malignant change, particularly in persistent red, erosive or ulcerated disease.
Published estimates vary because studies use different diagnostic criteria and may include oral lichenoid lesions that are not identical to true lichen planus. Reviews using strict criteria have reported lower transformation rates than broader studies, but regular examination remains appropriate.
A persistent ulcer, lump, hardened area, unexplained bleeding or changing lesion should be examined promptly and may require biopsy.
Which oral changes require prompt reassessment?
Arrange timely review for:
- An ulcer that does not heal
- A lump or thickened area
- Increasing pain
- Unexplained bleeding
- A change in colour or surface
- Difficulty swallowing
- Persistent hoarseness
- Reduced tongue movement
- Unexplained weight loss
- Enlarged neck lymph nodes
These changes do not automatically mean cancer, but they should not be attributed to routine lichen planus without examination.
Why are dental check-ups important?
Good dental and gum health can reduce additional irritation in an already sensitive mouth.
Patients with oral lichen planus may be advised to:
- Brush gently twice daily
- Use a soft toothbrush
- Floss or use an appropriate interdental cleaner
- Attend regular dental examinations
- Have professional cleaning as advised
- Address sharp teeth or poorly fitting dental appliances
- Avoid toothpaste that repeatedly burns or irritates
Ongoing review by a dermatologist, dentist or oral-medicine clinician may be appropriate according to the disease pattern.
Which foods may irritate oral lichen planus?
During an active flare, discomfort may worsen with:
- Spicy food
- Acidic food
- Citrus fruit
- Very salty food
- Hard or crunchy food
- Very hot drinks
- Alcohol
- Tobacco
Patients do not need to remove every item permanently. The goal is to avoid foods that repeatedly cause pain while maintaining a balanced diet.
Additional care and practical advice
Can dental materials trigger a lichenoid reaction?
Some oral lichenoid lesions may develop next to a dental material or another local irritant.
Assessment may consider:
- Dental fillings
- Metals
- Dental appliances
- Toothpaste ingredients
- Mouthwash
- Cinnamon or flavouring agents
- Repeated mechanical trauma
Removal or replacement of dental work should not be undertaken without coordinated dental and dermatological assessment.
What is lichen planopilaris?
Lichen planopilaris is lichen planus affecting the scalp hair follicles.
It can cause:
- Scalp itching
- Burning
- Tenderness
- Redness around hair follicles
- Perifollicular scale
- Patchy hair loss
- Loss of follicular openings
- Permanent scarring alopecia
Unlike alopecia areata, lichen planopilaris can destroy follicles permanently. Treatment aims primarily to stop inflammatory progression and preserve remaining hair.
Why is early diagnosis of lichen planopilaris important?
Hair that has already been lost because of follicular scarring may not regrow.
Early treatment may:
- Reduce itching and burning
- Control scalp inflammation
- Slow extension of bald areas
- Protect follicles that remain
- Reduce permanent hair loss
A painful, burning or scaly area of scalp hair loss should therefore be assessed without waiting for it to become large.
How is lichen planopilaris different from alopecia areata?
- Is a scarring alopecia
- May cause scalp burning or tenderness
- Produces inflammation and scale around follicles
- Can permanently destroy follicles
- Often requires biopsy when uncertain
- Is usually non-scarring
- Commonly produces smooth bald patches
- Preserves follicular openings
- Allows potential regrowth
- May affect nails, eyebrows or beard
The consultation can include the skin, mouth, scalp, nails and genital symptoms rather than treating only the most visible rash.
Lichen planus is distinguished from eczema, psoriasis, fungal infection, lupus, lichenoid drug eruption and other similar conditions.
Skin biopsy is available at both branches for selected uncertain, scarring or changing lesions.
Scalp and nail lichen planus can cause permanent damage, making timely diagnosis especially important.
Treatment is planned under Dr. Cheena Langer, MBBS, MD Dermatology, Consultant Dermatologist.
Persistent erosive mucosal disease is followed for symptom control, scarring and suspicious changes.
General dermatology consultation is available at both Karan Nagar and Paloura.
Additional cost depends on:
- Body area affected
- Topical medicine
- Mouth rinse, gel or paste
- Corticosteroid injections
- Skin, scalp, nail or oral biopsy
- Blood tests
- Treatment of secondary infection
- Systemic medicine and monitoring
- Dental or oral-medicine review
- External phototherapy
- Follow-up after the included 10-day period
Skin-only lichen planus generally requires a different plan from erosive oral disease, progressive nail damage or scarring scalp involvement.
How care is planned
- Assessment comes before treatment selection.
- Options, limitations, aftercare and expected timelines are explained.
- The plan is adapted to diagnosis, skin type and medical history.
Choose a clinic in Jammu
Karan Nagar
Lane 2, Karan Nagar, near Amphalla Chowk, Jammu – 180005Doctor consultation:
Mon–Sat 11:00 AM–4:00 PM
Sun 11:00 AM–3:00 PM
Paloura Chowk
Top Paloura, opposite Government Senior Secondary School, Jammu – 181121Doctor consultation:
Mon–Sat 6:00 PM–8:00 PM
Sun 10:30 AM–12:00 PM
Frequently asked questions
Can lichen planus affect the nails?
Yes. Nail lichen planus may affect one, several or all nails.
Possible changes include:
- Longitudinal ridges
- Roughness
- Thinning
- Splitting
- Loss of shine
- Crumbling
- Separation
- Reduced nail growth
- Scarring beneath or around the nail
- Permanent nail loss
Early treatment matters because established nail scarring may be irreversible.
Is every rough or damaged nail caused by lichen planus?
No.
Similar nail changes can result from:
- Fungal infection
- Psoriasis
- Trauma
- Eczema
- Alopecia areata
- Repeated manicure damage
- Nutritional or systemic disease
- Other inflammatory nail disorders
Nail clippings, fungal testing or biopsy may be considered when the diagnosis remains uncertain.
What is genital lichen planus?
Genital lichen planus can affect the vulva, vagina, penis or surrounding genital skin.
Possible symptoms include:
- Itching
- Burning
- Soreness
- Pain
- Red or darker patches
- White lacy markings
- Raw erosions
- Bleeding
- Pain during sexual activity
- Scarring
Genital disease may require prolonged treatment and monitoring because erosive inflammation can damage sensitive tissue.
Can genital lichen planus cause scarring?
Yes. Persistent erosive genital disease may lead to:
- Adhesions
- Narrowing
- Altered anatomy
- Pain during intercourse
- Urinary discomfort
- Vaginal narrowing in severe cases
- Foreskin or penile scarring
Early assessment and consistent treatment can help reduce progressive inflammation and scarring.
What is vulvovaginal-gingival syndrome?
Some patients develop erosive lichen planus involving both:
- The mouth or gums
- The vulva or vagina
This pattern may be referred to as vulvovaginal-gingival syndrome.
Patients with persistent oral lichen planus should mention genital soreness, and patients with genital disease should report mouth ulcers or gum inflammation.
Can men develop genital lichen planus?
Yes.
Penile lichen planus may produce:
- Ring-shaped patches
- Purple, brown or white lesions
- Itching
- Soreness
- Erosions
- Scarring
It must be distinguished from fungal infection, psoriasis, lichen sclerosus, fixed drug eruption and sexually transmitted infections.
Can children develop lichen planus?
Yes, although lichen planus is less common in children than adults.
Children may develop:
- Skin bumps
- Oral lesions
- Nail changes
- Scalp involvement
- Dark marks after healing
Treatment should consider the child’s age, body area, disease severity and risk of long-term scarring. Painful procedures or systemic medicines require careful risk–benefit assessment.
Get a clear plan for lichen planus
Request a consultation with Dr. Cheena Langer at Karan Nagar or Paloura Chowk.
Medical disclaimer: Results may vary from person to person. This content is for informational purposes only and does not substitute a consultation with a qualified medical professional. Dr. Cheena Langer, MD is a registered medical practitioner.